WO2023023965A1 - Métriques spécifiques au faisceau dans des rapports pour transmission de liaison montante - Google Patents

Métriques spécifiques au faisceau dans des rapports pour transmission de liaison montante Download PDF

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Publication number
WO2023023965A1
WO2023023965A1 PCT/CN2021/114440 CN2021114440W WO2023023965A1 WO 2023023965 A1 WO2023023965 A1 WO 2023023965A1 CN 2021114440 W CN2021114440 W CN 2021114440W WO 2023023965 A1 WO2023023965 A1 WO 2023023965A1
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WIPO (PCT)
Prior art keywords
report
candidate
csi
ssbris
cris
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PCT/CN2021/114440
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English (en)
Inventor
Fang Yuan
Yan Zhou
Qiaoyu Li
Tao Luo
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to CN202180101574.6A priority Critical patent/CN117837197A/zh
Priority to PCT/CN2021/114440 priority patent/WO2023023965A1/fr
Publication of WO2023023965A1 publication Critical patent/WO2023023965A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present disclosure relates generally to communication systems, and more particularly, to wireless communication systems with uplink (UL) report.
  • UL uplink
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • 5G New Radio is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements.
  • 3GPP Third Generation Partnership Project
  • 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) .
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable low latency communications
  • Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard.
  • LTE Long Term Evolution
  • a method, a computer-readable medium, and an apparatus at a user equipment may include a memory and at least one processor coupled to the memory.
  • the memory and the at least one processor coupled to the memory may be configured to transmit, to a base station, an uplink (UL) report associated with a pathloss (PL) reference signal (RS) or one or more beam-specific power control (PC) parameters associated with one or more candidate synchronization signal block (SSB) resource indicators (SSBRIs) or one or more channel state information (CSI) RS resource indicators (CRIs) associated with a candidate pool.
  • PL pathloss
  • PC beam-specific power control
  • SSB candidate synchronization signal block
  • CSI channel state information
  • the UL report may include one or more of: a virtual power headroom (PHR) report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a layer 1 (L1) channel state information (CSI) report including one or more UL metrics.
  • PHR virtual power headroom
  • L1 layer 1 (L1) channel state information (CSI) report including one or more UL metrics.
  • the memory and the at least one processor coupled to the memory may be further configured to communicate with the base station based on the UL report.
  • the apparatus may include a memory and at least one processor coupled to the memory.
  • the memory and the at least one processor coupled to the memory may be configured to receive, from a UE, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the UL report may include one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report including one or more UL metrics.
  • the memory and the at least one processor coupled to the memory may be further configured to communicate with the UE based on the uplink report.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.
  • FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
  • FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
  • FIG. 2B is a diagram illustrating an example of DL channels within a subframe, in accordance with various aspects of the present disclosure.
  • FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
  • FIG. 2D is a diagram illustrating an example of UL channels within a subframe, in accordance with various aspects of the present disclosure.
  • FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
  • UE user equipment
  • FIG. 4 is a diagram illustrating a base station in communication with a UE via a set of beams.
  • FIG. 5 is a diagram illustrating a data field for reporting maximum permissible exposure (MPE) .
  • FIG. 6 is a diagram illustrating communications between a UE and a base station.
  • FIG. 7 is a flowchart of a method of wireless communication.
  • FIG. 8 is a flowchart of a method of wireless communication.
  • FIG. 9 is a diagram illustrating an example of a hardware implementation for an example apparatus.
  • FIG. 10 is a diagram illustrating an example of a hardware implementation for an example apparatus.
  • a TCI state may include information that a UE may use to derive timing/frequency error and/or transmission/reception spatial filtering for transmitting/receiving a signal.
  • a base station may indicate a TCI state to the UE as a transmission configuration that indicates relationships between one signal (e.g., a reference signal) and the signal to be transmitted/received.
  • TCI states may provide information about different beam selections for the UE to use for transmitting/receiving various signals.
  • a pool of joint DL/UL TCI states may be used for joint DL/UL TCI state updates for beam indication.
  • the TCI state pool for separate DL and UL TCI state updates may be used.
  • the joint TCI may or may not include UL-specific parameter (s) such as UL PC/timing parameters, PL RS, panel-related indication, or the like. If the joint TCI includes the UL-specific parameter (s) , the parameters may be used for the UL transmission of the DL and UL transmissions to which the joint TCI is applied.
  • Example aspects provided herein may support beam-specific UL reporting in various UL reports, such as virtual PHR or CSI RS reports.
  • the beam-specific UL reporting may include beam-specific power control (PC) parameters for calculating UL metrics.
  • PC beam-specific power control
  • processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure.
  • processors in the processing system may execute software.
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer.
  • such computer-readable media can comprise a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable ROM
  • optical disk storage magnetic disk storage
  • magnetic disk storage other magnetic storage devices
  • combinations of the types of computer-readable media or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
  • implementations and/or uses may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described innovations may occur.
  • non-module-component based devices e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc.
  • Implementations may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations.
  • devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect.
  • transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders/summers, etc. ) .
  • innovations described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.
  • FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network 100.
  • the wireless communications system (also referred to as a wireless wide area network (WWAN) ) includes base stations 102, UEs 104, an Evolved Packet Core (EPC) 160, and another core network 190 (e.g., a 5G Core (5GC) ) .
  • the base stations 102 may include macrocells (high power cellular base station) and/or small cells (low power cellular base station) .
  • the macrocells include base stations.
  • the small cells include femtocells, picocells, and microcells.
  • the base stations 102 configured for 4G LTE may interface with the EPC 160 through first backhaul links 132 (e.g., S1 interface) .
  • the base stations 102 configured for 5G NR may interface with core network 190 through second backhaul links 184.
  • the base stations 102 may perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity) , inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS) , subscriber and equipment trace, RAN information management (RIM) , paging, positioning, and delivery of warning messages.
  • NAS non-access stratum
  • RAN radio access network
  • MBMS multimedia broadcast multicast service
  • RIM RAN information management
  • the base stations 102 may communicate directly or indirectly (e.g., through the EPC 160 or core network 190) with each other over third backhaul links 134 (e.g., X2 interface) .
  • the first backhaul links 132, the second backhaul links 184, and the third backhaul links 134 may be wired or wireless.
  • the base stations 102 may wirelessly communicate with the UEs 104. Each of the base stations 102 may provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, the small cell 102' may have a coverage area 110' that overlaps the coverage area 110 of one or more macro base stations 102.
  • a network that includes both small cell and macrocells may be known as a heterogeneous network.
  • a heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) .
  • eNBs Home Evolved Node Bs
  • HeNBs Home Evolved Node Bs
  • CSG closed subscriber group
  • the communication links 120 between the base stations 102 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to a base station 102 and/or downlink (DL) (also referred to as forward link) transmissions from a base station 102 to a UE 104.
  • the communication links 120 may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity.
  • the communication links may be through one or more carriers.
  • the base stations 102 /UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc.
  • the component carriers may include a primary component carrier and one or more secondary component carriers.
  • a primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
  • D2D communication link 158 may use the DL/UL WWAN spectrum.
  • the D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) .
  • sidelink channels such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) .
  • sidelink channels such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) .
  • D2D communication may be through a variety of wireless D2D communications systems, such as for example, WiMedia, Bluetooth, ZigBe
  • the wireless communications system may further include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 via communication links 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like.
  • AP Wi-Fi access point
  • STAs Wi-Fi stations
  • communication links 154 e.g., in a 5 GHz unlicensed frequency spectrum or the like.
  • the STAs 152 /AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
  • CCA clear channel assessment
  • the small cell 102' may operate in a licensed and/or an unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cell 102' may employ NR and use the same unlicensed frequency spectrum (e.g., 5 GHz, or the like) as used by the Wi-Fi AP 150. The small cell 102', employing NR in an unlicensed frequency spectrum, may boost coverage to and/or increase capacity of the access network.
  • the small cell 102' employing NR in an unlicensed frequency spectrum, may boost coverage to and/or increase capacity of the access network.
  • FR1 frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles.
  • FR2 which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
  • EHF extremely high frequency
  • ITU International Telecommunications Union
  • FR3 7.125 GHz –24.25 GHz
  • FR3 7.125 GHz –24.25 GHz
  • Frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics, and thus may effectively extend features of FR1 and/or FR2 into mid- band frequencies.
  • higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz.
  • FR4a or FR4-1 52.6 GHz –71 GHz
  • FR4 52.6 GHz –114.25 GHz
  • FR5 114.25 GHz –300 GHz
  • sub-6 GHz or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • millimeter wave or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band.
  • a base station 102 may include and/or be referred to as an eNB, gNodeB (gNB) , or another type of base station.
  • Some base stations, such as gNB 180 may operate in a traditional sub 6 GHz spectrum, in millimeter wave frequencies, and/or near millimeter wave frequencies in communication with the UE 104.
  • the gNB 180 may be referred to as a millimeter wave base station.
  • the millimeter wave base station 180 may utilize beamforming 182 with the UE 104 to compensate for the path loss and short range.
  • the base station 180 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and/or antenna arrays to facilitate the beamforming.
  • the base station 180 may transmit a beamformed signal to the UE 104 in one or more transmit directions 182'.
  • the UE 104 may receive the beamformed signal from the base station 180 in one or more receive directions 182” .
  • the UE 104 may also transmit a beamformed signal to the base station 180 in one or more transmit directions.
  • the base station 180 may receive the beamformed signal from the UE 104 in one or more receive directions.
  • the base station 180 /UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 180 /UE 104.
  • the transmit and receive directions for the base station 180 may or may not be the same.
  • the transmit and receive directions for the UE 104 may or may not be the same.
  • the EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172.
  • MME Mobility Management Entity
  • MBMS Multimedia Broadcast Multicast Service
  • BM-SC Broadcast Multicast Service Center
  • PDN Packet Data Network
  • the MME 162 may be in communication with a Home Subscriber Server (HSS) 174.
  • HSS Home Subscriber Server
  • the MME 162 is the control node that processes the signaling between the UEs 104 and the EPC 160.
  • the MME 162 provides bearer and connection management. All user Internet protocol (IP) packets are transferred through the Serving Gateway 166, which itself is connected to the PDN Gateway 172.
  • IP Internet protocol
  • the PDN Gateway 172 provides UE IP address allocation as well as other functions.
  • the PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176.
  • the IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS) , a PS Streaming Service, and/or other IP services.
  • the BM-SC 170 may provide functions for MBMS user service provisioning and delivery.
  • the BM-SC 170 may serve as an entry point for content provider MBMS transmission, may be used to authorize and initiate MBMS Bearer Services within a public land mobile network (PLMN) , and may be used to schedule MBMS transmissions.
  • PLMN public land mobile network
  • the MBMS Gateway 168 may be used to distribute MBMS traffic to the base stations 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start/stop) and for collecting eMBMS related charging information.
  • MMSFN Multicast Broadcast Single Frequency Network
  • the core network 190 may include an Access and Mobility Management Function (AMF) 192, other AMFs 193, a Session Management Function (SMF) 194, and a User Plane Function (UPF) 195.
  • the AMF 192 may be in communication with a Unified Data Management (UDM) 196.
  • the AMF 192 is the control node that processes the signaling between the UEs 104 and the core network 190.
  • the AMF 192 provides QoS flow and session management. All user Internet protocol (IP) packets are transferred through the UPF 195.
  • the UPF 195 provides UE IP address allocation as well as other functions.
  • the UPF 195 is connected to the IP Services 197.
  • the IP Services 197 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS) , a Packet Switch (PS) Streaming (PSS) Service, and/or other IP services.
  • IMS IP Multimedia Subsystem
  • PS Packet Switch
  • PSS Packet
  • the base station may include and/or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a transmit reception point (TRP) , or some other suitable terminology.
  • the base station 102 provides an access point to the EPC 160 or core network 190 for a UE 104.
  • Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor/actuator, a display, or any other similar functioning device.
  • SIP session initiation protocol
  • PDA personal digital assistant
  • Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) .
  • the UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.
  • the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and/or individually access the network.
  • the UE 104 may include a report component 198.
  • the report component 198 may be configured to transmit, to a base station, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the UL report may include one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report including one or more UL metrics.
  • the report component 198 may be further configured to communicate with the base station based on the uplink report.
  • the base station 180 may include a report component 199.
  • the report component 199 may be configured to receive, from a UE, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the UL report may include one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report including one or more UL metrics.
  • the report component 199 may be further configured to communicate with the UE based on the uplink report.
  • FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure.
  • FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe.
  • FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure.
  • FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe.
  • the 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL.
  • FDD frequency division duplexed
  • TDD time division duplexed
  • the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL/UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols.
  • UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically/statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) .
  • DCI DL control information
  • RRC radio resource control
  • SFI received slot format indicator
  • FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and/or different channels.
  • a frame (10 ms) may be divided into 10 equally sized subframes (1 ms) .
  • Each subframe may include one or more time slots.
  • Subframes may also include mini-slots, which may include 7, 4, or 2 symbols.
  • Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended.
  • CP cyclic prefix
  • the symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • the symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also referred to as single carrier frequency-division multiple access (SC-FDMA) symbols) (for power limited scenarios; limited to a single stream transmission) .
  • DFT discrete Fourier transform
  • SC-FDMA single carrier frequency-division multiple access
  • the number of slots within a subframe is based on the CP and the numerology.
  • the numerology defines the subcarrier spacing (SCS) and, effectively, the symbol length/duration, which is equal to 1/SCS.
  • the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology ⁇ , there are 14 symbols/slot and 2 ⁇ slots/subframe.
  • the symbol length/duration is inversely related to the subcarrier spacing.
  • the slot duration is 0.25 ms
  • the subcarrier spacing is 60 kHz
  • the symbol duration is approximately 16.67 ⁇ s.
  • BWPs bandwidth parts
  • Each BWP may have a particular numerology and CP (normal or extended) .
  • a resource grid may be used to represent the frame structure.
  • Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers.
  • RB resource block
  • PRBs physical RBs
  • the resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
  • the RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE.
  • DM-RS demodulation RS
  • CSI-RS channel state information reference signals
  • the RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
  • BRS beam measurement RS
  • BRRS beam refinement RS
  • PT-RS phase tracking RS
  • FIG. 2B illustrates an example of various DL channels within a subframe of a frame.
  • the physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs) , each CCE including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB.
  • CCEs control channel elements
  • REGs RE groups
  • a PDCCH within one BWP may be referred to as a control resource set (CORESET) .
  • CORESET control resource set
  • a UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and/or lower frequencies across the channel bandwidth.
  • a primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe/symbol timing and a physical layer identity.
  • a secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing.
  • the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS.
  • the physical broadcast channel (PBCH) which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) /PBCH block (also referred to as SS block (SSB) ) .
  • the MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) .
  • the physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
  • SIBs system information blocks
  • some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station.
  • the UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) .
  • the PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH.
  • the PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used.
  • the UE may transmit sounding reference signals (SRS) .
  • the SRS may be transmitted in the last symbol of a subframe.
  • the SRS may have a comb structure, and a UE may transmit SRS on one of the combs.
  • the SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
  • FIG. 2D illustrates an example of various UL channels within a subframe of a frame.
  • the PUCCH may be located as indicated in one configuration.
  • the PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and/or negative ACK (NACK) ) .
  • the PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and/or UCI.
  • BSR buffer status report
  • PHR power headroom report
  • FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network.
  • IP packets from the EPC 160 may be provided to a controller/processor 375.
  • the controller/processor 375 implements layer 3 and layer 2 functionality.
  • Layer 3 includes a radio resource control (RRC) layer
  • layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • the controller/processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression /decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDU
  • the transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions.
  • Layer 1 which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding/decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation/demodulation of physical channels, and MIMO antenna processing.
  • the TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) .
  • BPSK binary phase-shift keying
  • QPSK quadrature phase-shift keying
  • M-PSK M-phase-shift keying
  • M-QAM M-quadrature amplitude modulation
  • the coded and modulated symbols may then be split into parallel streams.
  • Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream.
  • IFFT Inverse Fast Fourier Transform
  • the OFDM stream is spatially precoded to produce multiple spatial streams.
  • Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing.
  • the channel estimate may be derived from a reference signal and/or channel condition feedback transmitted by the UE 350.
  • Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318 TX.
  • Each transmitter 318 TX may modulate a radio frequency (RF) carrier with a respective spatial stream for transmission.
  • RF radio frequency
  • each receiver 354 RX receives a signal through its respective antenna 352.
  • Each receiver 354 RX recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356.
  • the TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions.
  • the RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream.
  • the RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) .
  • FFT Fast Fourier Transform
  • the frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal.
  • the symbols on each subcarrier, and the reference signal are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358.
  • the soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel.
  • the data and control signals are then provided to the controller/processor 359, which implements layer 3 and layer 2 functionality.
  • the controller/processor 359 can be associated with a memory 360 that stores program codes and data.
  • the memory 360 may be referred to as a computer-readable medium.
  • the controller/processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the EPC 160.
  • the controller/processor 359 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
  • the controller/processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression /decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
  • RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting
  • PDCP layer functionality associated with
  • Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing.
  • the spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a respective spatial stream for transmission.
  • the UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350.
  • Each receiver 318RX receives a signal through its respective antenna 320.
  • Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
  • the controller/processor 375 can be associated with a memory 376 that stores program codes and data.
  • the memory 376 may be referred to as a computer-readable medium.
  • the controller/processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the UE 350. IP packets from the controller/processor 375 may be provided to the EPC 160.
  • the controller/processor 375 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
  • At least one of the TX processor 368, the RX processor 356, and the controller/processor 359 may be configured to perform aspects in connection with report component 198 of FIG. 1.
  • At least one of the TX processor 316, the RX processor 370, and the controller/processor 375 may be configured to perform aspects in connection with report component 199 of FIG. 1.
  • FIG. 4 is a diagram 400 illustrating a base station 402 in communication with a UE 404.
  • the base station 402 may transmit a beamformed signal to the UE 404 in one or more of the directions 402a, 402b, 402c, 402d, 402e, 402f, 402g, 402h.
  • the UE 404 may receive the beamformed signal from the base station 402 in one or more receive directions 404a, 404b, 404c, 404d.
  • the UE 404 may also transmit a beamformed signal to the base station 402 in one or more of the directions 404a-404d.
  • the base station 402 may receive the beamformed signal from the UE 404 in one or more of the receive directions 402a-402h.
  • the base station 402 /UE 404 may perform beam training to determine the best receive and transmit directions for each of the base station 402 /UE 404.
  • the transmit and receive directions for the base station 402 may or may not be the same.
  • the transmit and receive directions for the UE 404 may or may not be the same.
  • the term beam may be otherwise referred to as “spatial filter” . Beamforming may be otherwise referred to as “spatial filtering” .
  • the UE 404 may determine to switch beams, e.g., between beams 402a-402h.
  • the beam at the UE 404 may be used for reception of downlink communication and/or transmission of uplink communication.
  • the base station 402 may send a transmission that triggers a beam switch by the UE 404.
  • a TCI state may include Quasi co-location (QCL) information that the UE can use to derive timing/frequency error and/or transmission/reception spatial filtering for transmitting/receiving a signal.
  • QCL Quasi co-location
  • the base station may indicate a TCI state to the UE as a transmission configuration that indicates QCL relationships between one signal (e.g., a reference signal) and the signal to be transmitted/received.
  • a TCI state may indicate a QCL relationship between DL RSs in one RS set and PDSCH/PDCCH DM-RS ports.
  • TCI states can provide information about different beam selections for the UE to use for transmitting/receiving various signals.
  • the base station 402 may indicate a TCI state change, and in response, the UE 404 may switch to a new beam according to the new TCI state indicated by the base station 402.
  • a pool of joint DL/UL TCI states may be used for joint DL/UL TCI state updates for beam indication.
  • the base station 402 may transmit a pool of joint DL/UL TCI states to the UE 404.
  • the UE 404 may determine to switch transmission beams and/or reception beams based on the joint DL/UL TCI states.
  • the TCI state pool for separate DL and UL TCI state updates may be used.
  • the base station 402 may use RRC signaling to configure the TCI state pool.
  • the joint TCI may or may not include UL-specific parameter (s) such as UL PC/timing parameters, PL RS, panel-related indication, or the like. If the joint TCI includes the UL-specific parameter (s) , the parameters may be used for the UL transmission of the DL and UL transmissions to which the joint TCI is applied.
  • UL-specific parameter such as UL PC/timing parameters, PL RS, panel-related indication, or the like.
  • a type 1 TCI may be a joint DL/UL common TCI state to indicate a common beam for at least one DL channel or RS and at least one UL channel or RS.
  • a type 2 TCI may be a separate DL (e.g., separate from UL) common TCI state to indicate a common beam for more than one DL channel or RS.
  • a type 3 TCI may be a separate UL common TCI state to indicate a common beam for more than one UL channel/RS.
  • a type 4 TCI may be a separate DL single channel or RS TCI state to indicate a beam for a single DL channel or RS.
  • a type 5 TCI may be a separate UL single channel or RS TCI state to indicate a beam for a single UL channel or RS.
  • a type 6 TCI may include UL spatial relation information (e.g., such as sounding reference signal (SRS) resource indicator (SRI) ) to indicate a beam for a single UL channel or RS.
  • SRS sounding reference signal
  • SRI resource indicator
  • An example RS may be an SSB, a tracking reference signal (TRS) and associated CSI-RS for tracking, a CSI-RS for beam management, a CSI-RS for CQI management, a DM-RS associated with non-UE-dedicated reception on PDSCH and a subset (which may be a full set) of control resource sets (CORESETs) , or the like.
  • a TCI state may be defined to represent at least one source RS to provide a reference (e.g., UE assumption) for determining quasi-co-location (QCL) or spatial filters.
  • a TCI state may define a QCL assumption between a source RS and a target RS.
  • the source reference signal (s) in M may provide QCL information at least for UE-dedicated reception on PDSCH and for UE-dedicated reception on all or subset of CORESETs in a CC.
  • the source reference signal (s) in N may provide a reference for determining common UL transmission (TX) spatial filter (s) at least for dynamic-grant or configured-grant based PUSCH and all or subset of dedicated PUCCH resources in a CC.
  • the UL TX spatial filter may also apply to all SRS resources in resource set (s) configured for antenna switching, codebook-based, or non-codebook-based UL transmissions.
  • each of the following DL RSs may share the same indicate TCI state as UE-dedicated reception on PDSCH and for UE-dedicated reception on all or subset of CORESETs in a CC: CSI-RS resources for CSI, some or all CSI-RS resources for beam management, CSI-RS for tracking, and DM-RS (s) associated with UE-dedicated reception on PDSCH and all/subset of CORESETs.
  • Some SRS resources or resource sets for beam management may share the same indicated TCI state as dynamic-grant/configured-grant based PUSCH, all or subset of dedicated PUCCH resources in a CC.
  • several QCL rules may be defined.
  • a first rule may define that TCI to DM-RS of UE dedicated PDSCH and PDCCH may not have SSB as a source RS to provide QCL type D information.
  • a second rule may define that TCI to some DL RS such as CSI-RS may have SSB as a source RS to provide QCL type D information.
  • a third rule may define that TCI to some UL RS such as SRS can have SSB as a source RS to provide spatial filter information.
  • Example aspects provided herein enable a UE to signal capability of applying unified TCI to RS, provide QCL indication to DL RS, and provide hybrid spatial filter indication to UL RS.
  • UE-dedicated PDCCH/PDSCH e.g., common to UE-dedicated PDCCH and UE-dedicated PDSCH
  • common UL TX spatial filter s
  • UE-dedicated PUSCH/PUCCH across a set of configured CCs/BWPs e.g., common to multiple PUSCH/PUCCH across configured CCs/BWPs
  • several configurations may be provided.
  • the RRC-configured TCI state pool (s) may be configured as part of the PDSCH configuration (such as in a PDSCH-Config parameter) for each BWP or CC.
  • the RRC-configured TCI state pool (s) may be absent in the PDSCH configuration for each BWP/CC, and may be replaced by a reference to RRC-configured TCI state pool (s) in a reference BWP/CC.
  • the UE may apply the RRC-configured TCI state pool (s) in the reference BWP/CC.
  • the UE may assume that QCL-Type A or Type D source RS is in the BWP/CC to which the TCI state applies.
  • a UE may report a UE capability indicating a maximum number of TCI state pools that the UE can support across BWPs and CCs in a band.
  • a UE Before receiving a TCI state, a UE may assume that the antenna ports of one DM-RS port group of a PDSCH are spatially QCL’d with an SSB determined in the initial access procedure with respect to one or more of: a Doppler shift, a Doppler spread, an average delay, a delay spread, a set of spatial Rx parameters, or the like.
  • the UE After receiving the new TCI state, the UE may assume that the antenna ports of one DM-RS port group of a PDSCH of a serving cell are QCL’d with the RS (s) in the RS set with respect to the QCL type parameter (s) given by the indicated TCI state.
  • QCL type A may include the Doppler shift, the Doppler spread, the average delay, and the delay spread
  • QCL type B may include the Doppler shift and the Doppler spread
  • QCL type C may include the Doppler shift and the average delay
  • QCL type D may include the spatial Rx parameters (e.g., associated with beam information such as beamforming properties for finding a beam) .
  • the maximum number of TCI states may be 128.
  • a UE may receive a signal from a base station.
  • the signal may be configured to trigger a TCI state change and may be received via, for example, a medium access control (MAC) control element (CE) (MAC-CE) , a downlink control information (DCI) , or a radio resource control (RRC) signal.
  • the TCI state change may cause the UE to find the best or most suitable UE receive beam corresponding to the TCI state indicated by the base station and switch to such beam. Switching beams may allow for an enhanced or improved connection between the UE and the base station by ensuring that the transmitter and receiver use the same configured set of beams for communication.
  • a spatial relation change may trigger the UE to switch beams.
  • Beamforming may be applied to uplink channels, such as a PUSCH, a PUCCH, or an SRS. Beamforming may be based on configuring one or more spatial relations between the uplink and downlink signals. Spatial relation indicates that a UE may transmit the uplink signal using the same beam used for receiving the corresponding downlink signal.
  • the base station 402 may indicate a change in a PL RS that the UE may use to determine power control for uplink transmissions, such as a PUSCH, a PUCCH, or an SRS.
  • the UE 404 may determine to switch to a new beam.
  • Some wireless communication systems may use codebook-based MIMO.
  • MIMO systems may allow multiple independent radio terminals, each of which has one or multiple antennas that communicate with a given access point in such a way that each radio terminal can fully utilize all the spectral resources simultaneously.
  • a MIMO system (such as the base station 402) may employ a procedure, such as precoding, to resolve the problem of interference among the signals transmitted from an access point to the multiple terminals in the same frequency band at the same time.
  • the precoding may be selected from a standardized codebook.
  • a non-codebook-based MIMO there may be no such codebook, and the precoding may be dynamically determined.
  • an SRI field in DCI may indicate a set of precoders associated with an SRS resource set and a set of power control (PC) parameters which may include P0, alpha, closed-loop index (which may be referred to as “Closedloopindex” ) , PL RS, or the like.
  • P0 may represent a base station received power per resource block assuming a path loss of 0 decibels (dB) .
  • Alpha may represent possible values for uplink power control (e.g., pathloss compensation factor) .
  • the closed-loop index may be an index of the closed power control loop associated with the SRI and the associated PUSCH.
  • a beam of the PUSCH may follow the SRS resource set. For example, all SRSs in the same SRS resource set may have the same beam, and the SRI may not select a beam.
  • an SRI field in DCI may select an SRS resource from multiple SRSs in an SRS resource set for determining a beam for PUSCH transmission. For example, different SRS selected by SRI in the SRS resource set may have different beams.
  • a transmitted precoding matrix indicator (TPMI) in DCI may indicate precoders, and the SRI field may indicate a set of power control parameters which may also include P0, alpha, Closedloopindex, PL RS, or the like.
  • one or more of the following settings may be selected or combined: 1) the setting of (P0, alpha, closed-loop index) may be associated with UL or (if applicable) joint TCI state; 2) the setting of (P0, alpha, closed-loop index) may be included with UL or (if applicable) joint TCI state; and 3) the setting of (P0, alpha, closed-loop index) may be neither associated with nor included in UL or (if applicable) joint TCI state.
  • the setting of (P0, alpha, closed-loop index) may be associated with the UL channel or UL RS. Therefore, the setting of PC parameters that are not PL RS may be channel-specific and signal-specific.
  • PL RS settings may be configured differently.
  • PL RS may be included in UL TCI state (or, if applicable, joint TCI state) . If not included in the UL TCI state, PL RS may be the periodic DL-RS used as a source RS for determining spatial TX filter or the PL RS used for the UL RS in UL or (if applicable) joint TCI state.
  • PL-RS may also be associated with (but not included in) UL TCI state (or, if applicable, joint TCI state) .
  • PL RS may be the periodic DL-RS used as a source RS for determining spatial TX filter or the PL RS used for the UL RS in UL or (if applicable) joint TCI state.
  • a UE may also calculate path-loss based on periodic DL RS configured as the source RS for determining spatial TX filter in UL or (if applicable) joint TCI state.
  • the UE may estimate path-loss based on the PL-RS of an UL RS provided in an UL TCI state (or, if applicable, joint TCI state) as a source RS for determining the spatial TX filter.
  • a PL RS may not estimate path-loss based on the PL-RS of an UL RS provided in an UL TCI state (or, if applicable, joint TCI state) as a source RS for determining the spatial TX filter.
  • a UE may calculate path-loss based on periodic DL RS configured as the source RS or a periodic QCL-Type-D/spatialRelationInfo source of the source RS in UL TCI state or (if applicable) joint TCI state.
  • FIG. 5 is a diagram 500 illustrating a data field (which may be in a medium access control control element (MAC-CE) for reporting maximum permissible exposure (MPE) .
  • the data field may include one or more reserved bits R.
  • the data field may include power headroom (PH) that indicates a power headroom level.
  • P may indicate whether the MAC entity may apply power backoff due to power management. If a parameter mpe-Reporting is configured (representing whether the UE may report MPE) , P may be set to 0 if a power backoff is less than a configured threshold, and P may be set to 1 if the power backoff is not less than the configured threshold.
  • the MAC entity may set the P field to 1 if the corresponding P CMAX, f, c field may have a different value if no power backoff due to power management had been applied.
  • the P CMAX, f, c field may represent a configured maximum UE output power for a serving cell and may be used for calculation of the preceding PH field.
  • the MPE field may represent the applied power backoff to meet MPE requirements if the mpe-Reporting parameter is configured and if the P field is set to 1.
  • the MPE field may otherwise represent an index of the corresponding measured values of P-MPR levels in decibel (dB) if the mpe-Reporting parameter is not configured or if the P field is set to 0.
  • a UE may determine that a Type 1 PHR report for an activated serving cell is based on an actual PUSCH transmission and may compute the Type 1 PHR report accordingly. In some aspects, a UE may determine that a Type 3 power headroom report for an activated serving cell is based on an actual SRS transmission and may compute the Type 3 PHR report accordingly.
  • a P-MPR based beam/panel level report may be associated with a virtual PHR report.
  • the virtual PHR report may be associated with each activated UL TCI or, if applicable, joint TCI, or associated with each of the reported SSBRI (s) /CRI (s) and/or panel indication (if configured) from candidate pool, if reported.
  • the report may be based on event-driven mechanisms.
  • SSBRI (s) /CRI (s) and/or panel indication may be associated with L1 reference signal received power (RSRP) or signal to interference or noise ratio (SINR) may account for MPE associated with each of the reported SSBRI (s) /CRI (s) and/or panel indication (if configured) .
  • RSRP reference signal received power
  • SINR signal to interference or noise ratio
  • a pool of joint DL/UL TCI states may be used for joint DL/UL TCI state updates for beam indication.
  • the TCI state pool for separate DL and UL TCI state updates may be used.
  • the joint TCI may or may not include UL-specific parameter (s) such as UL PC/timing parameters, PL RS, panel-related indication, or the like. If the joint TCI includes the UL-specific parameter (s) , the parameters may be used for the UL transmission of the DL and UL transmissions to which the joint TCI is applied.
  • Example aspects provided herein may support beam-specific UL reporting in various UL reports, such as virtual PHR or CSI RS reports.
  • the beam-specific UL reporting may include beam-specific power control (PC) parameters for calculating UL metrics.
  • PC beam-specific power control
  • FIG. 6 is a diagram 600 illustrating example communications via one or more beams between a UE 602 and a base station 604.
  • the UE 602 may generate one or more reports 606 based on one or more received RSs 605 and may transmit the one or more reports 606 to the base station 604, and may exchange communication 608 with the base station 604 accordingly.
  • the one or more reports 606 may include L1 CSI RS reports, virtual PHR reports, or the like.
  • a virtual PHR report in the one or more reports 606 may be associated with each of the reported SSBRI (s) /CRI (s) from a candidate pool (if reported) .
  • the candidate pool may be configured via radio resource control (RRC) by the base station 604.
  • RRC radio resource control
  • the candidate pool may be derived from other RS sets, such as an RS in the one or more RSs 605. For example, SSB resource set, TCI activated state sets, or activated PLRS sets may be used to derive the candidate pool.
  • the UE 602 may report a virtual PH value by assuming beam- specific PC parameters (PL RS, P0, closed-loop index, alpha) associated with the SSBRI/CRI.
  • the UE 602 may report an actual beam-specific MPE (or P-MPR) value associated with SSBRI/CRI.
  • an L1 CSI-RS report may be included in the one or more reports 606 for UL reporting, such as candidate MPE measurement or UL RSRP.
  • the UE 602 may report a number of K resource indices (i.e., indices for RSs such as SSB or CSI-RS resource) , and a number of K UL metrics (i.e., modified virtual PHR, UL-RSRP) , in a CSI report instance, K being a positive integer.
  • the UL metrics and the resource indices in the CSI report may be one-to-one mapped.
  • the UE 602 may report one candidate RS index, one UL metric or one DL metric, or one UL metric.
  • the UE 602 may report a CRI and virtual power headroom for a reported RS, or the UE 602 may report a CRI, a DL L1-RSRP, and virtual power headroom for a reported RS.
  • the virtual power headroom may be calculated based on beam-specific PC parameters (i.e., any of PLRS, Po, closed loop index and alpha) and beam-specific MPE value.
  • the UE 602 may report its UE capability for the maximum value of K.
  • the number of K may be configured in the RRC signaling for the CSI report configuration.
  • the UL metrics if it is for modified virtual PHRs, may be for Type 1 or 3 PHR report, based on configurations.
  • the CSI report may be configured as aperiodic CSI report, semi-persistent CSI report, or periodical CSI report.
  • the CSI report may be carried in PUCCH or PUSCH.
  • a PL RS may be associated with the candidate SSBRI/CRI in UL reporting associated with the one or more reports 606.
  • the UE 602 may use the measured SSB/CSI-RS itself as PL RS to calculate the PHR value.
  • the UE 602 may use a default PL RS to calculate the PHR value, e.g. SSB for reading the master information block (MIB) .
  • the SSBRI/CRI may be associated with a unified TCI (joint TCI or UL TCI) , and the PL RS associated with or included in the TCI may be used to calculate the PHR value.
  • the UE 602 may use a PL RS based on a combination of the previously described aspects based on one or more conditions. For example, if the candidate RS has no TCI associated, the UE 602 may use the measured SSB/CSI-RS or the default PL RS as the PL RS to calculate the PHR value. If the candidate RS has associated TCI, the UE 602 may use the PL RS associated with or included in the TCI to calculate the PHR value.
  • the pathloss to be calculated in the virtual power headroom may be based on the L1-RSRP value measured from the mapped SSB/CSI-RS or unified TCI.
  • the L1-RSRP value may be measured with at least once by the UE 602.
  • one or more PC parameters may be associated with the candidate SSBRI/CRI in UL reporting associated with the one or more reports 606.
  • the UE 602 may use a default or a fixed set of PC parameters.
  • the UE 602 may use a default PC parameter associated with the default PL RS to calculate the PHR value, e.g. SSB for reading the MIB.
  • the UE 602 may use the set of PC parameters included in or associated with a unified TCI that is related to the SSBRI/CRI to calculate the PHR value.
  • the UE 602 may use a set of PC parameters based on one or more conditions.
  • the UE 602 may use the default, the fixed set of PC parameters, or the default PC parameter associated with the default PL RS to calculate the PHR value. Otherwise, the UE may use the set of PC parameters included in or associated with a unified TCI that is related to the SSBRI/CRI to calculate the PHR value.
  • FIG. 7 is a flowchart 700 of a method of wireless communication.
  • the method may be performed by a UE (e.g., the UE 104, the UE 404, the UE 602; the apparatus 902) .
  • the method may be used for beam-specific UL reporting that may improve efficiency of wireless communication.
  • the UE may transmit, to a base station, an UL report.
  • the UL report may include one or more of: a virtual PHR report or a L1 CSI report.
  • the uplink report may be associated with a PL RS or one or more PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the virtual PHR report may be associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, and the L1 CSI report may include one or more UL metrics.
  • the UE 602 may transmit, to a base station 604, an UL report 606 including one or more of: a virtual PHR report or a L1 CSI report.
  • the UL report includes the virtual PHR report based on the candidate pool is configured via RRC.
  • the one or more RS sets may include: one or more SSB resource sets, one or more TCI activated state sets, or one or more activated PL RS sets.
  • the UL report includes the virtual PHR report that is based on one or more beam-specific PC parameters associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • the one or more beam-specific PC parameters may include one or more of: the PL RS, a target received power, a close loop index, or a pathloss compensation factor.
  • the UL report includes the virtual PHR report, and the virtual PHR report includes one or more beam specific MPE or P-MPR associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • the UL report includes the L1 CSI report, and the L1 CSI report includes K resource indices associated with the one or more UL metrics. K may be a positive integer.
  • Each of the K resource indices may be associated with a SSB or a CSI RS associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • each of the K resource indices may be one to one mapped to the one or more UL metrics.
  • the one or more UL metrics may include: a MPE, a UL RSRP, or the virtual PHR, the virtual PHR being based on a beam specific MPE, a beam specific P-MPR, or one or more beam specific PC parameters.
  • the UL report further includes a maximum value for K supported by the UE.
  • the UL report may include the L1 CSI report, the L1 CSI report including one of: an aperiodic CSI report, a semi-persistent CSI report, or a periodical CSI report, and the CSI report may be carried in PUCCH or PUSCH.
  • one or more measured SSB or CSI-RS associated with the one or more candidate SSBRIs or the one or more candidate CRIs is used as the PL RS.
  • the PL RS is a default PL RS.
  • the default PL RS is an SSB for reading a MIB.
  • the one or more candidate SSBRIs or the one or more candidate CRIs may be associated with a joint or UL unified TCI.
  • the PL RS is associated with the joint or UL TCI.
  • the one or more candidate SSBRIs or the one or more candidate CRIs are associated with one or more PC parameters.
  • the one or more PC parameters includes one or more of: the PL RS, a target received power, a close loop index, or a pathloss compensation factor. In some aspects, the one or more PC parameters includes a default set of PC parameters. In some aspects, the PL RS is a default PL RS, and the one or more PC parameters includes a default PC parameter associated with the default PL RS. In some aspects, the one or more candidate SSBRIs or the one or more candidate CRIs are associated with a joint or UL unified TCI, and the one or more PC parameters are associated with the joint or UL TCI.
  • the UE may communicate with the base station based on the uplink report.
  • the UE 602 may communicate with the base station 604 based on the uplink report.
  • 704 may be performed by the communication component 942 of FIG. 9.
  • FIG. 8 is a flowchart 800 of a method of wireless communication.
  • the method may be performed by a base station (e.g., the base station 102/180, the base station 402, the base station 604; the apparatus 1002) .
  • the method may be used for beam-specific UL reporting that may improve efficiency of wireless communication.
  • the base station may receive, from a UE, an UL report.
  • the UL report may include one or more of: a virtual PHR report or a L1 CSI report.
  • the uplink report may be associated with a PL RS or one or more PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the virtual PHR report may be associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, and the L1 CSI report may include one or more UL metrics.
  • the base station 804 may receive, from the UE 802, an UL report 606 including one or more of: a virtual PHR report or a L1 CSI report.
  • the UL report includes the virtual PHR report based on the candidate pool is configured via RRC.
  • the one or more RS sets may include: one or more SSB resource sets, one or more TCI activated state sets, or one or more activated PL RS sets.
  • the UL report includes the virtual PHR report that is based on one or more beam-specific PC parameters associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • the one or more beam-specific PC parameters may include one or more of: the PL RS, a target received power, a close loop index, or a pathloss compensation factor.
  • the UL report includes the virtual PHR report, and the virtual PHR report includes one or more beam specific MPE or P-MPR associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • the UL report includes the L1 CSI report, and the L1 CSI report includes K resource indices associated with the one or more UL metrics. K may be a positive integer.
  • Each of the K resource indices may be associated with a SSB or a CSI RS associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • each of the K resource indices may be one to one mapped to the one or more UL metrics.
  • the one or more UL metrics may include: a MPE, a UL RSRP, or the virtual PHR, the virtual PHR being based on a beam specific MPE, a beam specific P-MPR, or one or more beam specific PC parameters.
  • the UL report further includes a maximum value for K supported by the UE.
  • the UL report may include the L1 CSI report, the L1 CSI report including one of: an aperiodic CSI report, a semi-persistent CSI report, or a periodical CSI report, and the CSI report may be carried in PUCCH or PUSCH.
  • one or more measured SSB or CSI-RS associated with the one or more candidate SSBRIs or the one or more candidate CRIs is used as the PL RS.
  • the PL RS is a default PL RS.
  • the default PL RS is an SSB for reading a MIB.
  • the one or more candidate SSBRIs or the one or more candidate CRIs may be associated with a joint or UL unified TCI.
  • the PL RS is associated with the joint or UL TCI.
  • the one or more candidate SSBRIs or the one or more candidate CRIs are associated with one or more PC parameters.
  • the one or more PC parameters includes one or more of: the PL RS, a target received power, a close loop index, or a pathloss compensation factor. In some aspects, the one or more PC parameters includes a default set of PC parameters. In some aspects, the PL RS is a default PL RS, and the one or more PC parameters includes a default PC parameter associated with the default PL RS. In some aspects, the one or more candidate SSBRIs or the one or more candidate CRIs are associated with a joint or UL unified TCI, and the one or more PC parameters are associated with the joint or UL TCI.
  • the base station may communicate with the UE based on the uplink report.
  • the base station 604 may communicate with the UE 602 based on the uplink report.
  • 804 may be performed by the communication component 1042 of FIG. 10.
  • FIG. 9 is a diagram 900 illustrating an example of a hardware implementation for an apparatus 902.
  • the apparatus 902 may be a UE, a component of a UE, or may implement UE functionality.
  • the apparatus 902 may include a cellular baseband processor 904 (also referred to as a modem) coupled to a cellular RF transceiver 922.
  • the apparatus 902 may further include one or more subscriber identity modules (SIM) cards 920, an application processor 906 coupled to a secure digital (SD) card 908 and a screen 910, a Bluetooth module 912, a wireless local area network (WLAN) module 914, a Global Positioning System (GPS) module 916, or a power supply 918.
  • SIM subscriber identity modules
  • SD secure digital
  • Bluetooth module 912 a wireless local area network
  • WLAN wireless local area network
  • GPS Global Positioning System
  • the cellular baseband processor 904 communicates through the cellular RF transceiver 922 with the UE 104 and/or BS 102/180.
  • the cellular baseband processor 904 may include a computer-readable medium /memory.
  • the computer-readable medium /memory may be non-transitory.
  • the cellular baseband processor 904 is responsible for general processing, including the execution of software stored on the computer-readable medium /memory.
  • the software when executed by the cellular baseband processor 904, causes the cellular baseband processor 904 to perform the various functions described supra.
  • the computer-readable medium /memory may also be used for storing data that is manipulated by the cellular baseband processor 904 when executing software.
  • the cellular baseband processor 904 further includes a reception component 930, a communication manager 932, and a transmission component 934.
  • the communication manager 932 includes the one or more illustrated components.
  • the components within the communication manager 932 may be stored in the computer-readable medium /memory and/or configured as hardware within the cellular baseband processor 904.
  • the cellular baseband processor 904 may be a component of the UE 350 and may include the memory 360 and/or at least one of the TX processor 368, the RX processor 356, and the controller/processor 359.
  • the apparatus 902 may be a modem chip and include just the cellular baseband processor 904, and in another configuration, the apparatus 902 may be the entire UE (e.g., see 350 of FIG. 3) and include the additional modules of the apparatus 902.
  • the communication manager 932 may include a report component 940 that is configured to transmit, to a base station, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the UL report may include one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report including one or more UL metrics, e.g., as described in connection with 702 in FIG. 7.
  • the communication manager 932 may further include a communication component 942 that may be configured to communicate with the base station based on the uplink report, e.g., as described in connection with 704 in FIG. 7.
  • the apparatus may include additional components that perform each of the blocks of the algorithm in the flowchart of FIG. 7. As such, each block in the flowcharts of FIG. 7 may be performed by a component and the apparatus may include one or more of those components.
  • the components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
  • the apparatus 902 may include a variety of components configured for various functions.
  • the apparatus 902, and in particular the cellular baseband processor 904 may include means for transmitting, to a base station, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool; the UL report comprising one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report comprising one or more UL metrics.
  • the cellular baseband processor 904 may further include means for communicating with the base station based on the uplink report.
  • the means may be one or more of the components of the apparatus 902 configured to perform the functions recited by the means.
  • the apparatus 902 may include the TX Processor 368, the RX Processor 356, and the controller/processor 359.
  • the means may be the TX Processor 368, the RX Processor 356, and the controller/processor 359 configured to perform the functions recited by the means.
  • FIG. 10 is a diagram 1000 illustrating an example of a hardware implementation for an apparatus 1002.
  • the apparatus 1002 may be a base station, a component of a base station, or may implement base station functionality.
  • the apparatus 902 may include a baseband unit 1004.
  • the baseband unit 1004 may communicate through a cellular RF transceiver 1022 with the UE 104.
  • the baseband unit 1004 may include a computer-readable medium /memory.
  • the baseband unit 1004 is responsible for general processing, including the execution of software stored on the computer-readable medium /memory.
  • the software when executed by the baseband unit 1004, causes the baseband unit 1004 to perform the various functions described supra.
  • the computer-readable medium /memory may also be used for storing data that is manipulated by the baseband unit 1004 when executing software.
  • the baseband unit 1004 further includes a reception component 1030, a communication manager 1032, and a transmission component 1034.
  • the communication manager 1032 includes the one or more illustrated components.
  • the components within the communication manager 1032 may be stored in the computer-readable medium /memory and/or configured as hardware within the baseband unit 1004.
  • the baseband unit 1004 may be a component of the base station 310 and may include the memory 376 and/or at least one of the TX processor 316, the RX processor 370, and the controller/processor 375.
  • the communication manager 1032 may include a report component 1040 that may receive, from a UE, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool.
  • the UL report may include one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report including one or more UL metrics, e.g., as described in connection with 802 in FIG. 8.
  • the communication manager 1032 further may include a communication component 1042 that may communicate with the UE based on the uplink report, e.g., as described in connection with 804 in FIG. 8.
  • the apparatus may include additional components that perform each of the blocks of the algorithm in the flowchart of FIG. 8. As such, each block in the flowchart of FIG. 8 may be performed by a component and the apparatus may include one or more of those components.
  • the components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
  • the apparatus 1002 may include a variety of components configured for various functions.
  • the apparatus 1002, and in particular the baseband unit 1004 may include means for an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool; the UL report comprising one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report comprising one or more UL metrics.
  • the baseband unit 1004 may further include means for communicating with the UE based on the UL report.
  • the means may be one or more of the components of the apparatus 1002 configured to perform the functions recited by the means.
  • the apparatus 1002 may include the TX Processor 316, the RX Processor 370, and the controller/processor 375.
  • the means may be the TX Processor 316, the RX Processor 370, and the controller/processor 375 configured to perform the functions recited by the means.
  • Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C.
  • combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C.
  • Aspect 1 is an apparatus for wireless communication at a UE, comprising: a memory; and at least one processor coupled to the memory and configured to: transmit, to a base station, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool; the UL report comprising one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report comprising one or more UL metrics; and communicate with the base station based on the UL report.
  • Aspect 2 is the apparatus of aspect 1, wherein the UL report includes the virtual PHR report based on the candidate pool is configured via RRC.
  • Aspect 3 is the apparatus of any of aspects 1-2, wherein the UL report includes the virtual PHR report and the candidate pool is derived based on one or more RS sets.
  • Aspect 4 is the apparatus of any of aspects 1-3, wherein the one or more RS sets comprises: one or more SSB resource sets, one or more TCI activated state sets, or one or more activated PL RS sets.
  • Aspect 5 is the apparatus of any of aspects 1-4, wherein the UL report includes the virtual PHR report that is based on the one or more beam-specific PC parameters associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • Aspect 6 is the apparatus of any of aspects 1-5, wherein the one or more beam-specific PC parameters comprises one or more of: the PL RS, a target received power, a closed-loop index, or a pathloss compensation factor.
  • Aspect 7 is the apparatus of any of aspects 1-6, wherein the UL report includes the virtual PHR report, and the virtual PHR report comprises one or more beam specific MPE or P-MPR associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • Aspect 8 is the apparatus of any of aspects 1-7, wherein the UL report includes the L1 CSI report, and the L1 CSI report comprises K resource indices associated with the one or more UL metrics, K being a positive integer, each of the K resource indices being associated with a SSB or a CSI RS associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • Aspect 9 is the apparatus of any of aspects 1-8, wherein each of the K resource indices is one to one mapped to the one or more UL metrics, and wherein the one or more UL metrics comprises: a MPE, a UL RSRP, or the virtual PHR, the virtual PHR being based on a beam specific MPE, a beam specific P-MPR, or the one or more beam specific PC parameters.
  • Aspect 10 is the apparatus of any of aspects 1-9, wherein the UL report further comprises a maximum value for K supported by the UE.
  • Aspect 11 is the apparatus of any of aspects 1-10, wherein the UL report includes the L1 CSI report, the L1 CSI report comprising one of: an aperiodic CSI report, a semi-persistent CSI report, or a periodical CSI report, and wherein the CSI report is carried in PUCCH or PUSCH.
  • Aspect 12 is the apparatus of any of aspects 1-11, wherein one or more measured SSB or CSI-RS associated with the one or more candidate SSBRIs or the one or more candidate CRIs is used as the PL RS.
  • Aspect 13 is the apparatus of any of aspects 1-12, wherein the PL RS is a default PL RS.
  • Aspect 14 is the apparatus of any of aspects 1-13, wherein the default PL RS is an SSB for reading a MIB.
  • Aspect 15 is the apparatus of any of aspects 1-14, wherein the one or more candidate SSBRIs or the one or more candidate CRIs are associated with a joint or UL unified TCI, and wherein the PL RS is associated with the joint or UL TCI.
  • Aspect 16 is the apparatus of any of aspects 1-15, wherein the one or more candidate SSBRIs or the one or more candidate CRIs are associated with the one or more PC parameters.
  • Aspect 17 is the apparatus of any of aspects 1-16, wherein the one or more PC parameters comprises one or more of: the PL RS, a target received power, a closed-loop index, or a pathloss compensation factor.
  • Aspect 18 is the apparatus of any of aspects 1-17, wherein the one or more PC parameters comprises a default set of PC parameters.
  • Aspect 19 is the apparatus of any of aspects 1-18, wherein the PL RS is a default PL RS, and wherein the one or more PC parameters comprises a default PC parameter associated with the default PL RS.
  • Aspect 20 is the apparatus of any of aspects 1-19, wherein the one or more candidate SSBRIs or the one or more candidate CRIs are associated with a joint or UL unified TCI, and wherein the one or more PC parameters are associated with the joint or UL TCI.
  • Aspect 21 is the apparatus of any of aspects 1-20, further comprising at least one antenna and a transceiver coupled to the at least one processor and the at least one antenna.
  • Aspect 22 is an apparatus for wireless communication at base station, comprising: a memory; and at least one processor coupled to the memory and configured to: receive, from a UE, an UL report associated with a PL RS or one or more beam-specific PC parameters associated with one or more candidate SSBRIs or one or more CRIs associated with a candidate pool; the UL report comprising one or more of: a virtual PHR report associated with each of the one or more candidate SSBRIs or the one or more candidate CRIs, or a L1 CSI report comprising one or more UL metrics; and communicate with the UE based on the UL report.
  • Aspect 23 is the apparatus of aspect 22, wherein the UL report includes the virtual PHR report based on the candidate pool is configured via RRC.
  • Aspect 24 is the apparatus of any of aspects 22-23, wherein the UL report includes the virtual PHR report and the candidate pool is derived based on one or more RS sets.
  • Aspect 25 is the apparatus of any of aspects 22-24, wherein the one or more RS sets comprises: one or more SSB resource sets, one or more TCI activated state sets, or one or more activated PL RS sets.
  • Aspect 26 is the apparatus of any of aspects 22-25, wherein the UL report includes the virtual PHR report that is based on the one or more beam-specific PC parameters associated with the one or more candidate SSBRIs or the one or more candidate CRIs.
  • Aspect 27 is the apparatus of any of aspects 22-26, wherein the one or more beam-specific PC parameters comprises one or more of: the PL RS, a target received power, a closed-loop index, or a pathloss compensation factor.
  • Aspect 28 is the apparatus of any of aspects 22-27, further comprising at least one antenna and a transceiver coupled to the at least one processor and the at least one antenna.
  • Aspect 29 is a method of wireless communication for implementing any of aspects 1 to 21.
  • Aspect 30 is an apparatus for wireless communication including means for implementing any of aspects 1 to 21.
  • Aspect 31 is a computer-readable medium storing computer executable code, where the code when executed by a processor causes the processor to implement any of aspects 22 to 28.
  • Aspect 32 is a method of wireless communication for implementing any of aspects 22 to 28.
  • Aspect 33 is an apparatus for wireless communication including means for implementing any of aspects 22 to 28.
  • Aspect 34 is a computer-readable medium storing computer executable code, where the code when executed by a processor causes the processor to implement any of aspects 22 to 28.

Abstract

La présente invention concerne des procédés, des appareils et un support lisible par ordinateur permettant de faciliter le rapport de métriques de liaison montante spécifiques aux faisceaux. Un procédé donné à titre d'exemple comprend la transmission, à une station de base, d'un rapport de liaison montante associé à un signal PL RS ou à un ou plusieurs paramètres PC spécifiques aux faisceaux associés à un ou plusieurs SSBRI candidats ou à un ou plusieurs CRI associés à un groupe candidat ; le rapport de liaison montante incluant : un rapport PHR virtuel associé à chacun des uns ou plusieurs SSBRI candidats ou des uns ou plusieurs CRI candidats, et/ou un rapport L1 CSI incluant une ou plusieurs métriques de liaison montante. Le procédé donné à titre d'exemple peut en outre inclure la communication avec la station de base sur la base du rapport de liaison montante.
PCT/CN2021/114440 2021-08-25 2021-08-25 Métriques spécifiques au faisceau dans des rapports pour transmission de liaison montante WO2023023965A1 (fr)

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WO2021035666A1 (fr) * 2019-08-30 2021-03-04 Qualcomm Incorporated Améliorations de traitement pour rapport d'informations d'état de canal
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